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The volcanic eruption in Russia has caused purple sunsets around the world



  Volcanic eruptions in Russia cause purple sunsets worldwide

Doug Goetz / University of Colorado Boulder via CNN

A team led by Lars Kalnajs releases a high peak that wolf at dawn.

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(CNN) – A volcanic eruption thousands of miles away could make sunsets and sunsets more colorful, according to researchers at the University of Colorado Boulder.

A school team noticed that during the summer. , sunrises and sunsets had more of a purple color to them. They sent a high-altitude balloon to collect samples of particles in the Earth's stratosphere, according to a news release from the school last week.

"These particles, or aerosols, absorb sunlight as it travels through the air, which in combination with the absorption of light of the ozone layer, gives sunrises and sunsets a purple tint," the release said .

On June 22, a Russian volcano called Raikoke erupted, sending ash and volcanic gases from the 700-meter-wide crater into the atmosphere. The explosion was so huge that astronauts could see the International Space Station, NASA said in a statement. and blue light spreads over the aerosols it encounters. This means that less blue light reaches our eyes from directions closer to the sun, causing the sky to appear orange and red. time towards our eyes and camera. This blue light blends with the red light coming from the sun, giving the sky a purple color.

Lars Kalnajs, an associate in the school's Laboratory for Atmospheric and Space Physics, led the project and said this explosion. is no cause for concern, but warns that we need to prepare for something bigger.

"A really big explosion will have a huge impact on humanity," Kalnajs said in a news release.

He quoted an eruption at The Mount Tambora in 1815 that led to a "summer year" because of ash and volcanic material awaiting the environment. melting until June, "says Kalnajs. Preliminary data collected to date show that some layers of aerosol in the stratosphere are 20 times thicker than usual in the explosion, according to news. of aerosols in the stratosphere to be modified its composition, ”Kalnajs said. "It is a relatively small volcanic eruption, but it is sufficient to affect most of the northern hemisphere."

The group's research is expected to be published later this year.


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